Evaluation of the basal temperature of snow (BTS) method to map permafrost in complex mountainous terrain, Wolf Creek, Yukon Territory
This study is the first known attempt in North America to use the basal temperature of snow (BTS) method to predict the distribution of mountain permafrost. The study site, Wolf Creek Research Basin, Yukon Territory (60°30'N, 135°13'W), is a 195 km2 basin ranging in elevation from 650--210...
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Université d'Ottawa / University of Ottawa
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ftdatacite:10.20381/ruor-9646 2023-05-15T17:55:41+02:00 Evaluation of the basal temperature of snow (BTS) method to map permafrost in complex mountainous terrain, Wolf Creek, Yukon Territory Ednie, Mark 2003 https://dx.doi.org/10.20381/ruor-9646 http://www.ruor.uottawa.ca/handle/10393/26478 en eng Université d'Ottawa / University of Ottawa Physical Geography. Text Thesis article-journal ScholarlyArticle 2003 ftdatacite https://doi.org/10.20381/ruor-9646 2021-11-05T12:55:41Z This study is the first known attempt in North America to use the basal temperature of snow (BTS) method to predict the distribution of mountain permafrost. The study site, Wolf Creek Research Basin, Yukon Territory (60°30'N, 135°13'W), is a 195 km2 basin ranging in elevation from 650--2100 m with a mean annual air temperature of about -4°C at 1235 m a.s.l. A modeled BTS surface, based on 394 measured BTS values and with elevation and potential incoming solar radiation as independent variables, was created within a GIS environment with an r2 value similar to European results. The distribution of permafrost within the basin was identified from pits and boreholes. A subsequent logistic regression was used to compare modeled BTS values to the actual permafrost distribution in order to produce a map of permafrost probability in the basin. A significantly higher likelihood of permafrost, observed in a confined valley bottom, was attributed to cold air drainage. This occurrence was not predicted by the BTS model and data from the affected area were removed from later analyses. (Abstract shortened by UMI.) Thesis permafrost Yukon DataCite Metadata Store (German National Library of Science and Technology) Yukon |
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English |
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Physical Geography. |
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Physical Geography. Ednie, Mark Evaluation of the basal temperature of snow (BTS) method to map permafrost in complex mountainous terrain, Wolf Creek, Yukon Territory |
topic_facet |
Physical Geography. |
description |
This study is the first known attempt in North America to use the basal temperature of snow (BTS) method to predict the distribution of mountain permafrost. The study site, Wolf Creek Research Basin, Yukon Territory (60°30'N, 135°13'W), is a 195 km2 basin ranging in elevation from 650--2100 m with a mean annual air temperature of about -4°C at 1235 m a.s.l. A modeled BTS surface, based on 394 measured BTS values and with elevation and potential incoming solar radiation as independent variables, was created within a GIS environment with an r2 value similar to European results. The distribution of permafrost within the basin was identified from pits and boreholes. A subsequent logistic regression was used to compare modeled BTS values to the actual permafrost distribution in order to produce a map of permafrost probability in the basin. A significantly higher likelihood of permafrost, observed in a confined valley bottom, was attributed to cold air drainage. This occurrence was not predicted by the BTS model and data from the affected area were removed from later analyses. (Abstract shortened by UMI.) |
format |
Thesis |
author |
Ednie, Mark |
author_facet |
Ednie, Mark |
author_sort |
Ednie, Mark |
title |
Evaluation of the basal temperature of snow (BTS) method to map permafrost in complex mountainous terrain, Wolf Creek, Yukon Territory |
title_short |
Evaluation of the basal temperature of snow (BTS) method to map permafrost in complex mountainous terrain, Wolf Creek, Yukon Territory |
title_full |
Evaluation of the basal temperature of snow (BTS) method to map permafrost in complex mountainous terrain, Wolf Creek, Yukon Territory |
title_fullStr |
Evaluation of the basal temperature of snow (BTS) method to map permafrost in complex mountainous terrain, Wolf Creek, Yukon Territory |
title_full_unstemmed |
Evaluation of the basal temperature of snow (BTS) method to map permafrost in complex mountainous terrain, Wolf Creek, Yukon Territory |
title_sort |
evaluation of the basal temperature of snow (bts) method to map permafrost in complex mountainous terrain, wolf creek, yukon territory |
publisher |
Université d'Ottawa / University of Ottawa |
publishDate |
2003 |
url |
https://dx.doi.org/10.20381/ruor-9646 http://www.ruor.uottawa.ca/handle/10393/26478 |
geographic |
Yukon |
geographic_facet |
Yukon |
genre |
permafrost Yukon |
genre_facet |
permafrost Yukon |
op_doi |
https://doi.org/10.20381/ruor-9646 |
_version_ |
1766163649310752768 |